Class: Locksmith

Inherits:
Object
  • Object
show all
Defined in:
lib/locksmith.rb

Constant Summary collapse

@@alpha_hex = 
Tuwaga.new(16, 'abcdefghijklmnop')
@@symbol_hex = 
Tuwaga.new(16, '~!@#$%^&*()_+-={')
@@hex = 
Tuwaga.new(16)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(private_password, domain, username = '', options = {}) ⇒ Locksmith

Returns a new instance of Locksmith.



13
14
15
16
17
18
19
20
21
22
23
 
# File 'lib/locksmith.rb', line 13

def initialize private_password, domain, username = '', options = {}
  @private_password = private_password
  @domain = domain
  @username = username
  @use_alphabet = options.has_key?(:use_alphabet) ? options[:use_alphabet] : true
  @use_number = options.has_key?(:use_number) ? options[:use_number] : true
  @use_symbol = options.has_key?(:use_symbol) ? options[:use_symbol] : true
  @max_length = options.has_key?(:max_length) ? options[:max_length] : nil

  @errors = []
end

Instance Attribute Details

#domain ⇒ Object

Returns the value of attribute domain.



6
7
8
 
# File 'lib/locksmith.rb', line 6

def domain
  @domain
end

#errors ⇒ Object (readonly)

Returns the value of attribute errors.



7
8
9
 
# File 'lib/locksmith.rb', line 7

def errors
  @errors
end

#max_length ⇒ Object

Returns the value of attribute max_length.



6
7
8
 
# File 'lib/locksmith.rb', line 6

def max_length
  @max_length
end

#private_password ⇒ Object

Returns the value of attribute private_password.



6
7
8
 
# File 'lib/locksmith.rb', line 6

def private_password
  @private_password
end

#username ⇒ Object

Returns the value of attribute username.



6
7
8
 
# File 'lib/locksmith.rb', line 6

def username
  @username
end

Instance Method Details

#generated_password ⇒ Object 



67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
 
# File 'lib/locksmith.rb', line 67

def generated_password
  if valid?
    raw = @private_password + @domain + (@username || '')
    hex_string = Digest::MD5.hexdigest(raw)

    result = ''

    if @use_alphabet
      result += @@alpha_hex.convert_from(hex_string[0, 1], @@hex).upcase
      hex_string = hex_string[1, (hex_string.length - 1)]

      result += @@alpha_hex.convert_from(hex_string[0, 1], @@hex).downcase
      hex_string = hex_string[1, (hex_string.length - 1)]
    end

    if @use_number
      result += @@hex.to_decimal(hex_string[0, 1]).to_s
      hex_string = hex_string[1, (hex_string.length - 1)]
    end

    if @use_symbol
      result += @@symbol_hex.convert_from(hex_string[0, 1], @@hex)
      hex_string = hex_string[1, (hex_string.length - 1)]
    end

    base_x_symbols = ''
    base_x_symbols += 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ' if @use_alphabet
    base_x_symbols += '0123456789' if @use_number
    base_x_symbols += '~!@#$%^&*()_+-={}|[]\\;\':"<>?,./' if @use_symbol
    base_x = Tuwaga.new(base_x_symbols.length, base_x_symbols)
    result += base_x.convert_from(hex_string, @@hex)

    if @max_length
      result = result[0,@max_length]
    end

    result
  else
    raise('Can not generate password: ' + @errors.join(', '))
  end
end

#use_alphabet=(use_alphabet) ⇒ Object 



29
30
31
 
# File 'lib/locksmith.rb', line 29

def use_alphabet= use_alphabet
  @use_alphabet = use_alphabet
end

#use_alphabet? ⇒ Boolean

Returns:

  • (Boolean) 


25
26
27
 
# File 'lib/locksmith.rb', line 25

def use_alphabet?
  @use_alphabet
end

#use_number=(use_number) ⇒ Object 



37
38
39
 
# File 'lib/locksmith.rb', line 37

def use_number= use_number
  @use_number = use_number
end

#use_number? ⇒ Boolean

Returns:

  • (Boolean) 


33
34
35
 
# File 'lib/locksmith.rb', line 33

def use_number?
  @use_number
end

#use_symbol=(use_symbol) ⇒ Object 



45
46
47
 
# File 'lib/locksmith.rb', line 45

def use_symbol= use_symbol
  @use_symbol = use_symbol
end

#use_symbol? ⇒ Boolean

Returns:

  • (Boolean) 


41
42
43
 
# File 'lib/locksmith.rb', line 41

def use_symbol?
  @use_symbol
end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
 
# File 'lib/locksmith.rb', line 49

def valid?
  @errors = []

  if !@private_password || @private_password.empty?
    @errors << 'private password is required'
  end

  if !@domain || @domain.empty?
    @errors << 'domain is required'
  end

  if !@use_alphabet && !@use_number && !@use_symbol
    @errors << 'at least on of use_alphabet, use_number or use_symbol must be true'
  end

  (@errors.length == 0)
end